Reversible fulcrum arrangement



A. SPARROW.

REVERSIBLE FULCRUM ARHANGENHENT APPLICATION FiLED OCT. 27,1921.

Patented Aug. 8, 1922.`

UNITED STATES.

PATENT OFFICE.

ARTHUR SPARROW, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICA STEELFOUNDBIES, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

REVERSIBLE FU'LCRUM ARRANGEMENT.

Application led October 27, 1921.

of Illinois. have invented certain new and4 useful Improvements inReversible Fulcrum Arrangements, of which the following is aspecification.

This invention relates to brake beams and more particularly toreversible fulcrums forming a part thereof.

The object of. this invention is to provide a reversible fulcrum for thetruss type of brake beam. which fulcrum may be reversed between rightand left-hand positions in a manner to meet service requirements and atthe same time which provides a connection to the compression member ofthe brake beam Without anv longitudinal lost motion.

This and other objects are accomplished by means of the arrangementdisclosed on the accompanying sheet of drawings. in Which- Figure l is aside elevation of a brake beam fulcrum post. together with the tensionand compression members of the brake beam shown in section;

Figure 2 is a fragmentary top plan view of the same brake beam; and

Figure 3 is a fragmentary rear elevation of the same4 The various novelfeatures of the invention will be apparent from the followingdescription and drawings and Will be particularly pointed out in theappended claims.

Referring to the figures of the drawings, it Will be noted that I have.illustrated my invention in connection with a truss type of braktJ beamincluding a compression member I0. a tension member 11 and a reversiblefulcrum post 12 interposed between and connecting same. This fulcrumpost receives a brake lever. not shown. in the usual manner.

A rear portion 13 of the fulcrum post 12 extends between flanges 14 ofthe compression member 10. and has a rear surface 15 which is adapted tofrictionally engage the front surface 16 of the web I7 of thecompression member 10. This reversible fulcrum post l2 also has at itsrear end a proliection i9 which extends through an opening 19 in the web17 of the compression member. This projection I8 is providedSpecification of Letters Patent.

Patented Ang. 8, 1922.

serial No. 510,895.

with an opening Q0 for the reception of a Wedge pin 2l whereby the rearsurface l5 of the fulcrum post l2 will be pressed against the frontsurface 16 of the compression member web 17 for frictionallyv holdingthe fulcrum post 12 in its different adjusted positions. It will benoted that the Wedge pin 2l has a rear inclined surface 2:? whichengages the inclined rear wall 23 of the opening 20 and that the frontsurface 24 ofJ the Wedge key 2l is straight and parallel with andVengages the rear surface 25 of the Web 17 of the compression member l0.It is apparent. therefore. that when the wedge 21 is driven into placethe rear surface 1.5 of the fulcrum. post 12 is tightly pressed againstthe inner surface 16 of the web I7 of. the compression member wherebythe fulcrum post is frictionalb7 held in adjusted position.

That portion 13 of the tulcrinn post 12 between the flanges 14 of thecompression member is provided with angular ,faces 26 for engaging saidfianges 14 for limiting the fulcrum post I2 in its reversible movements.

The front portion of the fulcrun'i post l?. is provided with a tensionrod saddle QT having forwardlv extendingl projections 28 so spaced andshaped to permit reversible movements of the fulcrum post It is myintention to cover all modifications of the invention falling within thespirit and scope of the following claims.

I claim:

I. In a brake beam. the combination of :i compression member having aweb portion. a fulcrum post having a portion adapted to engage said webportion and having a pro ject-ion extending bevond said compressionmember, and a Wcdge cooperating with said projection and compressionmember for pressing said fulcrum post and web portion of the compressionmember into engagement for frictionall)1 holding the fulcrum post inposition.

2. In a brake beam. the combination of a compression member having a Weband tianges. a reversible fulcrum post harinaT a portion interposedbetween the flanges of said compression member and adapted to engage theweb thereof. said fulcrum post extending bevond said compression member,and means cooperating with said extending portion of said post and saidcompresn a bra-ke beam, the combination of a compression member having aweb and flangesT said web haringv an opening, a. reversible fulcrum posthaving a portion inter.- posed between said flanges and engaging theweb, said fulcrum posthaving an apertured projection extending throughan opening in the web of the Compression member. and a wedge at the rearof the compression member extending through the opening in saidprojection for forcing the above mentioned portion of the fulerum postinto engagement with the web of said compression membev1 for holding thefulcrum post in adjusted position. l

4. In a bra-ke beam, the combination of a compression member having aweb and flanges, said web having an opening, a reversible fulcium 'postheffing a. portion ini terposed between said flanges and engagingtheweb, said fulcrum post having an :ipertured projectionV extending'through'4 the opening in the web of'the compression inember, a wedge atthe rear of the compression member extending through t e opening in saidrejection for forcing te above mentioneg port-ion of the fulcrum postinto env gagement with the web of said compression member for holdingthe fulcrum post in adjusted position, and means for limitingrei'ersible movements of said `fulcrum post.

5. In a brake beam, the combination of a compression member haring a weband anges, said web having an opening, a rei-eisibie fuicrum post havinge. portion interposed between said flanges and engaging the web, saidfulorum post having an apertured projection extending through theopening in the web of the compression member, and a. Wedge at the rearof the compres- Sion member extending through the opening in saidprojection for forcing the abovementioned portion of the fuicrlim postinto engagement with the web of said compression member for holding.rthe'fulcium post in adjusted position. said fulcrum post and flangescooperating to limit the reversible movementsof said fulerum. post.

Signed a-t Chicago, Illinois. this 18th day of Octobery1921.

ARTHUR SPARROW;

